Section 75 00-02-0522
04-06-11 - 30 -
Analog Inputs
There are 7 analog inputs. The first four analog inputs can be used with both resistive senders
as well as 0-5VDC & 4-20mA devices, and the last three analog inputs are configured in such
way that they may only be used with 4-20mA or 0-5VDC type signals.
The iGUARD uses variable precision current sources to accommodate many different brands
of resistive senders as well as true detection of open/missing sender and sender shorted to
ground.
To use an analog input with a resistive sender, wire as follows:
To use an analog input with a 0-5 VDC signal source, wire as follows: To use an analog input
with a 4-20mA signal source and the built in 250Ω load resistor, wire as follows:
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